Using python-config for correct boost.python build options

[Md Abdur Rahim]

Trying to build boost 1.53 with the last Python 3.4rc3 on linux, boost-python can't be built. Looking at the g++ command lines, boost-build adds $PYHTONDIR/include/python3.4 as include path. But for this version at least (i think it's the same for python 3.3 too?), the includes are in $PYTHONDIR/include/python3.4m python-config could have given that info, so couldn't it be used (by python.jam) when --with-python is used instead of regenerating a path based on the version, that doesn't work for all versions?